1 files changed, 44 insertions, 0 deletions
diff --git a/test/fixedbugs/bug398.go b/test/fixedbugs/bug398.go
new file mode 100644
index 0000000..a1583bd
--- /dev/null
+++ b/test/fixedbugs/bug398.go
@@ -0,0 +1,44 @@
+// compile
+
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Used to crash compiler in interface type equality check.
+// (This test used to have problems - see #15596.)
+
+package p
+
+// exported interfaces
+
+type I1 interface {
+      F() interface{I1}
+}
+
+type I2 interface {
+      F() interface{I2}
+}
+
+var V1 I1
+var V2 I2
+
+func F() bool {
+       return V1 == V2
+}
+
+// non-exported interfaces
+
+type i1 interface {
+      F() interface{i1}
+}
+
+type i2 interface {
+      F() interface{i2}
+}
+
+var v1 i1
+var v2 i2
+
+func f() bool {
+       return v1 == v2
+}